If you want to take good photos and get back at your boss. If you are a meticulous A-type person who wants to take pictures with perfect composition. How to use is super simple! (1) Launch the app on your iPhone (2) Press the "Book Photo" button (3) Hold your iPhone. When the horizontal and vertical lines are aligned, the shutter will automatically release to take the perfect picture! Perfect! No clutter, no options! The best camera life for you!